US20160007976A1 - Molding Process And Products Formed Thereby - Google Patents
Molding Process And Products Formed Thereby Download PDFInfo
- Publication number
- US20160007976A1 US20160007976A1 US14/713,367 US201514713367A US2016007976A1 US 20160007976 A1 US20160007976 A1 US 20160007976A1 US 201514713367 A US201514713367 A US 201514713367A US 2016007976 A1 US2016007976 A1 US 2016007976A1
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- US
- United States
- Prior art keywords
- core
- implement
- enclosure
- molding
- sections
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 23
- 239000000463 material Substances 0.000 claims abstract description 28
- 230000013011 mating Effects 0.000 claims description 3
- 239000012781 shape memory material Substances 0.000 claims description 2
- 238000001356 surgical procedure Methods 0.000 abstract description 4
- 239000007943 implant Substances 0.000 abstract 2
- 239000011162 core material Substances 0.000 description 62
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 2
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 2
- 229910001000 nickel titanium Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/06—Rods, e.g. connecting rods, rails, stakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/75—Shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
- B29L2031/7546—Surgical equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/06—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2311/00—Metals, their alloys or their compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2311/00—Metals, their alloys or their compounds
- B32B2311/005—Shape memory alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2383/00—Polysiloxanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2535/00—Medical equipment, e.g. bandage, prostheses, catheter
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/263—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer having non-uniform thickness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
Definitions
- the present invention relates generally to items used in surgical procedures, and more particularly to a process for molding exterior coatings on those items and the items formed by the molding process.
- the devices enable a physician to perform the multitude of tasks required to successfully complete the procedure.
- the procedure that the physician needs to perform requires the use of items, implements or other tools that require a certain amount of rigidity in the tool in order for the tool to effective in its particular use in the procedure.
- many of these items or tools are formed of a generally rigid material, such as a metal, that provides the desired amount of rigidity.
- the nature of the metal creates problems with regard to the re-use of the tool.
- the metal, as well as any coating applied to the exterior of the metal such as an anodized coating which is necessary for implements that are formed of titanium, must be sterilized after each use.
- the sterilization process can be problematic, as the metals and/or coating can become brittle or otherwise damaged upon sterilization after an initial use. Any damage done to the metal and/or coating can cause issues with the stability or integrity of the implement during subsequent uses which consequently can endanger the patient.
- implements that are formed of metal and a material that enables the implement/tool incorporating the metal to be sterilized and reused in multiple procedures without detrimentally affecting the tool and/or the metal component(s) of the tool.
- one aspect of the present disclosure provides an implement or tool formed of a substantially rigid, but optionally somewhat flexible core material that is enclosed within an inert material.
- the inert material provide a protective barrier around the core material and is capable of being sterilized after use without degrading the protective properties of the inert material to enable the implement to be reused.
- the inert material is molded over the core material to conform to the shape of the actual implement to provide the appropriate size and shape for the implement or tool when used by a physician in the procedure. Once used, the implement can be removed and subsequently sterilized, such as in an autoclave, for additional uses.
- the inert material is flexible and stretchable to accommodate any required flexibility of the core material while maintaining the core enclosed within the inert material.
- the implement can be bent in order to accurately conform to the proper location and configuration of for the implement when positioned within the body of the patient during the procedure and the inert material will maintain its conformance with the shape of the core.
- FIG. 1 is an isometric view of one embodiment of an implement core constructed according to the present disclosure
- FIG. 2 is a side elevation view of the core of FIG. 1 ;
- FIG. 3 is a cross-sectional view of the core of FIG. 2 ;
- FIG. 4 is an isometric view of the core of FIG. 1 after a first molding step
- FIG. 5 is a side elevation view of the core of FIG. 4 ;
- FIG. 6 is a cross-sectional view of the core of FIG. 5 ;
- FIG. 7 is an isometric view of the core/implement of FIG. 1 after a second molding step
- FIG. 8 is a side elevation view of the core/implement of FIG. 7 ;
- FIG. 9 is a cross-sectional view of the core/implement of FIG. 8 ;
- FIG. 10 is an isometric view of a second embodiment of an implement core constructed according to the present disclosure.
- FIG. 11 is a side elevation view of the implement core of FIG. 10 ;
- FIG. 12 is an isometric view of the implement core of FIG. 10 after a first molding step
- FIG. 13 is a side elevation view of the implement core of FIG. 12 ;
- FIG. 14 is an isometric view of the implement core of FIG. 10 after a second molding step
- FIG. 15 is a side elevation view of the implement core of FIG. 14 .
- the illustrated exemplary embodiment of the implement 100 is formed as a rod template having a central core 12 and an enclosure 14 disposed around the core 12 formed of a first component or portion(s) 16 and a second component or portion(s) 18 .
- the rod template 100 is formed to be generally straight, though other curved, looped or other configurations for the rod template 100 are also contemplated as being within the scope of the disclosure of the present invention.
- the core 12 is formed with a generally flat rectangular or cylindrical cross-sectional shape with a first end 20 and a second end 22 joined by opposed sides 24 , though any suitable cross-sectional shape can be utilized to impart the desired amount of flexibility to the core 12 .
- the core 12 is shaped in any suitable machine and/or process to provide the desired shape for the core 12 , which may include apertures or other features therein, as desired.
- the material forming the core 12 is selected to be a generally rigid, but flexible material that can be altered in shape by applying a physical force to the core 12 . Once the force is removed, the core 12 remains in the shape to which it was altered by the applied force.
- the core 12 is formed of a shape memory material, such as a shape memory metal alloy, including the materials marketed under the trade name Nitinol® by Nitinol Devices & Components, Inc. of Fremont, Calif.
- the enclosure 14 is disposed around the core 12 and each portion 16 and 18 joined together to form the enclosure 14 is formed of a biologically inert and flexible material that can conform to the shape of the core 12 in any configuration for the core 12 .
- the material forming the portions 16 and 18 of the enclosure 14 is a silicone, such as a silicone rubber, including a high consistence rubber (HCR).
- the portions 16 and 18 of the enclosure 14 are formed with any features (not shown) desired to enhance the utility of the implement 100 when utilized within the body of the patient.
- the features can include apertures 110 , notches (not shown), raised or depressed tactile portions, or printed indicia, among others.
- the apertures can extend completely through the respective portions 16 and 18 without intersecting the core 12 , thereby preserving the integrity of the enclosure 14 around the core 12 .
- the shape of the portions 16 and 18 forming the enclosure 14 can be shaped as desired. Also, the shape of the portions 16 and 18 can be selected independently of the shape of the core 12 to facilitate the operation or use of the implement 100 , or to conform to the shape of the core 12 , as desired.
- the implement 100 is formed by initially forming the core 12 of the desired material in any suitable manner, such as by extruding or molding the material into the desired shape for the core 12 , as shown in FIGS. 1-3 .
- the core 12 is then placed within a suitable mold (not shown) to enable the material selected to form the first portion 16 to be introduced into the mold containing the core 12 and form a portion of the enclosure 14 on or over the core 12 that contains the desired features within the portion 16 .
- Any suitable molding process can be utilized to form the first portion 16 around the core 12 , such as those shown in commonly owned U.S. Pat. No. 8,641,955 and its related applications, each of which are expressly incorporated by reference herein in their entirety.
- the first portion 16 constitutes a number of spaced sections 102 disposed along the length of the core 12 .
- the core 12 and the first portion 16 that has been molded onto or over the core 12 are removed or transferred from the first mold and placed within a separate or second mold (not shown) used to form the other of the second portion 18 on or over the core 12 in connection with the first portion 16 and with the desired features.
- the material selected to form the second portion 18 can be selected to be the same or different in one or more respects or attributes than the material used to form the first portion 16 , in order to provide the desired attributes to the enclosure 14 and the implement 100 , so long as the materials forming the first portion 16 and second portion 18 are capable of mating, co-mingling or otherwise joining to one another in the molding process used to form the enclosure 14 around the core 12 , which can be the same or different that the process used to form the first section 16 . Additionally, suitable materials can be applied to one or both of the portions 16 and/or 18 to properly affix the portions 16 and 18 to one another, either during molding of the portions 16 and 18 to one another, or when affixing pre-molded portions 16 and 18 to one another around the core 12 .
- the portions 16 and 18 can be formed subsequently or simultaneously within a single mold in any suitable molding process.
- the second portion 18 includes a number of spaced sections 104 disposed along the length of the core 12 and joining the sections 102 to form the enclosure 14 .
- the sections 102 and 104 form a seamless enclosure 14 around the core 12 complete with end caps 106 disposed over each end 20 , 22 of the core 12 .
- the seamless enclosure 14 moves, stretches and/or flexes with the core 12 to retain the core 12 encased within the enclosure 14 , such that the sterilization of the implement 100 does not contact the core 12 .
- FIGS. 10-15 illustrates the implement 200 as a flex driver.
- the implement 200 includes a suitably shaped core 212 with a pair of opposed ends 220 and 222 .
- the ends 220 and 222 define a central section 224 therebetween, as best shown in FIGS. 10-13 .
- the first portion 216 which can be formed similarly to the first portion 16 in the prior embodiment, is molded onto the core 212 in a first mold (not shown) in a first molding step over at least approximately one half of the central section 224 in a suitable process, such as those cited as examples for the molding of the first portion 16 in the prior embodiment.
- the ends 220 and 222 can function as stops for the flow of the material forming the first portion 216 at each end 220 and 222 .
- the core 212 can be removed from the first mold for positioning in a second mold (not shown), or simply rotated within the first mold to expose the uncovered portion 226 of the central section 224 within the second mold.
- the second portion 218 can be formed over the uncovered section 226 to form the enclosure 214 over the central section 224 with the first portion 216 and without end caps, leaving the ends 220 , 222 exposed.
- the process for molding the first portion 16 , 216 and/or second portion 18 , 218 can be performed in any number of separate molding steps in order to form the enclosure 14 , 214 on the core 12 , 212 with the desired appearance, attributes or other characteristics with any desired number and/or types of different materials forming the portions 16 , 216 and/or 18 , 218 .
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Abstract
Description
- This application claims priority from U.S. Provisional Patent Application Ser. No. 61/993,383, filed on May 15, 2014, the entirety of which is expressly incorporated herein by reference.
- The present invention relates generally to items used in surgical procedures, and more particularly to a process for molding exterior coatings on those items and the items formed by the molding process.
- There are many types of devices that are used in surgical procedures. The devices enable a physician to perform the multitude of tasks required to successfully complete the procedure. Oftentimes, the procedure that the physician needs to perform requires the use of items, implements or other tools that require a certain amount of rigidity in the tool in order for the tool to effective in its particular use in the procedure. As such, many of these items or tools are formed of a generally rigid material, such as a metal, that provides the desired amount of rigidity.
- However, with these tools formed at least partially of metal, the nature of the metal creates problems with regard to the re-use of the tool. The reason for this is that the metal, as well as any coating applied to the exterior of the metal, such as an anodized coating which is necessary for implements that are formed of titanium, must be sterilized after each use. With certain metals and coatings, the sterilization process can be problematic, as the metals and/or coating can become brittle or otherwise damaged upon sterilization after an initial use. Any damage done to the metal and/or coating can cause issues with the stability or integrity of the implement during subsequent uses which consequently can endanger the patient.
- Thus, it is desirable to develop implements that are formed of metal and a material that enables the implement/tool incorporating the metal to be sterilized and reused in multiple procedures without detrimentally affecting the tool and/or the metal component(s) of the tool.
- Briefly described, one aspect of the present disclosure provides an implement or tool formed of a substantially rigid, but optionally somewhat flexible core material that is enclosed within an inert material. The inert material provide a protective barrier around the core material and is capable of being sterilized after use without degrading the protective properties of the inert material to enable the implement to be reused. The inert material is molded over the core material to conform to the shape of the actual implement to provide the appropriate size and shape for the implement or tool when used by a physician in the procedure. Once used, the implement can be removed and subsequently sterilized, such as in an autoclave, for additional uses.
- According to another aspect of the present disclosure, the inert material is flexible and stretchable to accommodate any required flexibility of the core material while maintaining the core enclosed within the inert material. Thus, the implement can be bent in order to accurately conform to the proper location and configuration of for the implement when positioned within the body of the patient during the procedure and the inert material will maintain its conformance with the shape of the core.
- Numerous other aspects, features, and advantages of the present invention will be made apparent from the following detailed description together with the drawings figures.
- The drawings illustrate the best mode currently contemplated of practicing the present invention.
- In the drawings:
-
FIG. 1 is an isometric view of one embodiment of an implement core constructed according to the present disclosure; -
FIG. 2 is a side elevation view of the core ofFIG. 1 ; -
FIG. 3 is a cross-sectional view of the core ofFIG. 2 ; -
FIG. 4 is an isometric view of the core ofFIG. 1 after a first molding step; -
FIG. 5 is a side elevation view of the core ofFIG. 4 ; -
FIG. 6 is a cross-sectional view of the core ofFIG. 5 ; -
FIG. 7 is an isometric view of the core/implement ofFIG. 1 after a second molding step; -
FIG. 8 is a side elevation view of the core/implement ofFIG. 7 ; -
FIG. 9 is a cross-sectional view of the core/implement ofFIG. 8 ; -
FIG. 10 is an isometric view of a second embodiment of an implement core constructed according to the present disclosure; -
FIG. 11 is a side elevation view of the implement core ofFIG. 10 ; -
FIG. 12 is an isometric view of the implement core ofFIG. 10 after a first molding step; -
FIG. 13 is a side elevation view of the implement core ofFIG. 12 ; -
FIG. 14 is an isometric view of the implement core ofFIG. 10 after a second molding step; -
FIG. 15 is a side elevation view of the implement core ofFIG. 14 . - Referring now in detail to the drawing figures, wherein like reference numerals represent like parts throughout the several views, one exemplary embodiment of an implement constructed according to the present disclosure is illustrated generally at 100 in
FIG. 7 . As best shown inFIGS. 1-9 , the illustrated exemplary embodiment of theimplement 100 is formed as a rod template having acentral core 12 and anenclosure 14 disposed around thecore 12 formed of a first component or portion(s) 16 and a second component or portion(s) 18. In the illustrated exemplary embodiment, therod template 100 is formed to be generally straight, though other curved, looped or other configurations for therod template 100 are also contemplated as being within the scope of the disclosure of the present invention. - Though any suitable shape for the
core 12 can be utilized, in the illustrated embodiment thecore 12 is formed with a generally flat rectangular or cylindrical cross-sectional shape with afirst end 20 and asecond end 22 joined byopposed sides 24, though any suitable cross-sectional shape can be utilized to impart the desired amount of flexibility to thecore 12. Thecore 12 is shaped in any suitable machine and/or process to provide the desired shape for thecore 12, which may include apertures or other features therein, as desired. - The material forming the
core 12 is selected to be a generally rigid, but flexible material that can be altered in shape by applying a physical force to thecore 12. Once the force is removed, thecore 12 remains in the shape to which it was altered by the applied force. In one exemplary embodiment of thecore 12, thecore 12 is formed of a shape memory material, such as a shape memory metal alloy, including the materials marketed under the trade name Nitinol® by Nitinol Devices & Components, Inc. of Fremont, Calif. - The
enclosure 14 is disposed around thecore 12 and eachportion enclosure 14 is formed of a biologically inert and flexible material that can conform to the shape of thecore 12 in any configuration for thecore 12. in one embodiment, the material forming theportions enclosure 14 is a silicone, such as a silicone rubber, including a high consistence rubber (HCR). - The
portions enclosure 14 are formed with any features (not shown) desired to enhance the utility of theimplement 100 when utilized within the body of the patient. The features can include apertures 110, notches (not shown), raised or depressed tactile portions, or printed indicia, among others. The apertures can extend completely through therespective portions core 12, thereby preserving the integrity of theenclosure 14 around thecore 12. Further, the shape of theportions enclosure 14 can be shaped as desired. Also, the shape of theportions core 12 to facilitate the operation or use of theimplement 100, or to conform to the shape of thecore 12, as desired. - In one embodiment, the
implement 100 is formed by initially forming thecore 12 of the desired material in any suitable manner, such as by extruding or molding the material into the desired shape for thecore 12, as shown inFIGS. 1-3 . Thecore 12 is then placed within a suitable mold (not shown) to enable the material selected to form thefirst portion 16 to be introduced into the mold containing thecore 12 and form a portion of theenclosure 14 on or over thecore 12 that contains the desired features within theportion 16. Any suitable molding process can be utilized to form thefirst portion 16 around thecore 12, such as those shown in commonly owned U.S. Pat. No. 8,641,955 and its related applications, each of which are expressly incorporated by reference herein in their entirety. In the illustrated embodiment best shown inFIGS. 4-6 , thefirst portion 16 constitutes a number of spaced sections 102 disposed along the length of thecore 12. - Subsequently, the
core 12 and thefirst portion 16 that has been molded onto or over thecore 12 are removed or transferred from the first mold and placed within a separate or second mold (not shown) used to form the other of thesecond portion 18 on or over thecore 12 in connection with thefirst portion 16 and with the desired features. The material selected to form thesecond portion 18 can be selected to be the same or different in one or more respects or attributes than the material used to form thefirst portion 16, in order to provide the desired attributes to theenclosure 14 and theimplement 100, so long as the materials forming thefirst portion 16 andsecond portion 18 are capable of mating, co-mingling or otherwise joining to one another in the molding process used to form theenclosure 14 around thecore 12, which can be the same or different that the process used to form thefirst section 16. Additionally, suitable materials can be applied to one or both of theportions 16 and/or 18 to properly affix theportions portions portions core 12. - In alternative exemplary embodiments, the
portions second portion 18 includes a number of spaced sections 104 disposed along the length of thecore 12 and joining the sections 102 to form theenclosure 14. In this embodiment, as shown inFIGS. 7-9 , the sections 102 and 104 form aseamless enclosure 14 around thecore 12 complete with end caps 106 disposed over eachend core 12. Theseamless enclosure 14 moves, stretches and/or flexes with the core 12 to retain the core 12 encased within theenclosure 14, such that the sterilization of the implement 100 does not contact thecore 12. - In a second embodiment of the implement 200 shown in
FIGS. 10-15 illustrates the implement 200 as a flex driver. The implement 200 includes a suitablyshaped core 212 with a pair of opposed ends 220 and 222. The ends 220 and 222 define acentral section 224 therebetween, as best shown inFIGS. 10-13 . In the embodiment shown inFIGS. 12 and 13 , thefirst portion 216, which can be formed similarly to thefirst portion 16 in the prior embodiment, is molded onto thecore 212 in a first mold (not shown) in a first molding step over at least approximately one half of thecentral section 224 in a suitable process, such as those cited as examples for the molding of thefirst portion 16 in the prior embodiment. In this process, however, theends first portion 216 at eachend - Subsequently, the
core 212 can be removed from the first mold for positioning in a second mold (not shown), or simply rotated within the first mold to expose the uncoveredportion 226 of thecentral section 224 within the second mold. Once properly positioned, thesecond portion 218 can be formed over the uncoveredsection 226 to form theenclosure 214 over thecentral section 224 with thefirst portion 216 and without end caps, leaving theends - In alternative exemplary embodiments for either embodiment of the implement 100, 200, the process for molding the
first portion second portion enclosure core portions - Various other embodiments of the present disclosure are contemplated as being within the scope of the filed claims particularly pointing out and distinctly claiming the subject matter regarded as the invention.
Claims (15)
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US20170238976A1 (en) * | 2016-02-22 | 2017-08-24 | Nishijima Medical Co., Ltd. | Rod template |
US20180331723A1 (en) * | 2015-07-15 | 2018-11-15 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US10828069B2 (en) * | 2013-06-27 | 2020-11-10 | Gauthier Biomedical, Inc. | Reusable surgical implement |
US11129626B2 (en) * | 2017-11-29 | 2021-09-28 | Zimmer, Inc. | Flexible drive shaft assembly and methods |
US20230225765A1 (en) * | 2022-01-18 | 2023-07-20 | Medos International Sarl | Spinal fixation rod having a core and an outer layer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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